Number of n X 3 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors, with the exception of exactly two elements.

A283227

Number of n X 3 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors, with the exception of exactly two elements.

Terms

    a(0) =0a(1) =1a(2) =34a(3) =395a(4) =3996a(5) =37869a(6) =338397a(7) =2903399a(8) =24188526a(9) =196906027a(10) =1573282195a(11) =12379155797a(12) =96158433169a(13) =738796369876

External references